A walk in the fresh air will pep you up.

在清新空气中散散步会使你精神振奋。

《牛津词典》

Kids just love being able to romp around in the fresh air without having to wrap up warm.

孩子们就是喜欢在新鲜的空气里嬉闹，无须穿得太暖和。

《柯林斯英汉双解大词典》

It's healthy for children to play in the fresh air.

孩子们在空气新鲜的地方玩耍对他们的健康有益。

《新英汉大辞典》

As he walked out, he told a friend, "I think I can already smell the fresh mountain air of my home in Tennessee."

VOA: special.2010.02.11

Helmets, roll bars, caution flags... I like the fresh air... and looking at the poor people in the infield.

头盔，保险杠，警示旗。,我喜欢新鲜空气。,还喜欢看场上的倒霉蛋们。

耶鲁公开课 - 公正课程节选

The main goal of the respiratory system is to bring fresh in so that you can extract oxygen from it, and blow used air out so that you can rid of carbon dioxide which is the end product of carbon metabolism inside our bodies.

呼吸系统的主要功能是,吸入新鲜空气,以便获得空气中的氧气,呼出废气,以便排出二氧化碳,二氧化碳是人体内碳代谢的终产物

耶鲁公开课 - 生物医学工程探索课程节选

The children squeezed in a few precious hours of play in the fresh air.

FORBES: Cars and Hurricanes

There's nothing like being up there in the fresh air, unrestricted by roads or the ground.

CNN: Flying 'Parajet' takes off

Out in the fresh air they do everything children normally do inside, only going inside at mealtimes, or in unusually cold weather.

BBC: The babies who nap in sub-zero temperatures